I have Hasselblad 2003FCW, 50/2.8 FE, 110/2 FE, 250/5.6 SA CF and 32E extension tube and 2x Mutar. When I attach 32E and 250mm lens in the order of 32E to the body first and then lens, I’m unable to detach in reverse order. I have to remove the 32E from the body with lens attached and then separate 32E from lens. It works reliably even though I read it may cause a jam. The 50mm and 110mm detach correctly, lens first, then the extension tube. Detaching from Mutar works correctly with all lenses, including the 250mm. Any ideas why I can’t detach 250mm from the 32E attached to the camera ? I’m cocking the body before I try to release the lens. Could it be that the electronic extension tube for some reason doesn’t play nice with non electronic CF lens? Shooting with the combo works correctly, problem is only with detachment.